Clamp



FIG. 1 is a perspective top, front and right side view of a clamp, showing my new design;

FIG. 2 is a right side view thereof, the left side view being a mirror image;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a front view thereof; and,

FIG. 6 is a rear view thereof.

The dotted line disclosure of a shackle in FIGS. 1–3 is for illustrative purposes only and forms no part of my design. 

The ornamental design for a clamp, as shown and described. 